Top California Renewable Energy Companies (94)

A global leader in applied safety science, UL Solutions transforms safety, security and sustainability challenges into opportunities for customers in more than 100 countries. UL Solutions delivers testing, inspection and certification services, together with software products and advisory offerings, that support our customers’ product innovation and business growth. The UL Certification Marks serve as a recognized symbol of trust in...

Ohmium's mission is to accelerate the adoption of green hydrogen to decarbonize hard-to-abate sectors and enable a low-carbon future. Ohmium designs, manufactures and deploys modular, scalable proton exchange membrane (PEM) electrolyzer systems that enable cost-competitive green hydrogen production. Ohmium’s systems are vertically-stackable and integrate advanced power electronics, delivering superior value for a wide range of commercial and industrial applications...

Clean Energy pioneered renewable natural gas (RNG) as a vehicle fuel in the U.S. and we continue to be the largest provider of RNG for transportation. We have an extensive network of over 600 fueling stations across North America, and can deliver RNG to any station, public or private. RNG is the cleanest solution available today for heavy-duty trucks, transit...

BoxPower provides clean, reliable, and affordable energy to rural consumers. Our ecosystem of software and hardware solutions optimize the performance and accelerate the deployment of solar plus storage microgrids. From energy audit to operation, BoxPower provides turnkey engineering, construction, and management services.

Adapture Renewables is a solar project developer (and M&A shop), owner and operator. The company leverages its proven track record, deep domain expertise and comprehensive in-house development, EPC management, legal and project finance services to efficiently and effectively drive solar projects from origination to long-term operation, and at every stage in-between. Backed by KIRKBI, Adapture Renewables has the financial footing...

Inertia is taking the most direct, scientifically-proven path to commercializing fusion, leveraging the only successful achievement of fusion ignition, using a process that was pioneered at the U.S. Department of Energy’s (DOE) Lawrence Livermore National Laboratory (LLNL). With groundbreaking innovation, transformative technology, and multi-year investment, Inertia is committed to commercializing fusion energy in the next decade.

Ensurge is Energizing Innovation™ with ultrathin, flexible, and safe energy storage solutions for wearable devices, connected sensors, and beyond. Ensurge's innovative solid-state lithium battery (SSLB) technology is uniquely positioned to enable the production of powerful, lightweight, and cost-effective rechargeable batteries for diverse applications. The company’s state-of-the-art flexible electronics manufacturing facility, located in the heart of Silicon Valley, combines patented process...

Headquartered in Walnut Creek, Calif., Brown and Caldwell is an employee-owned firm with 2,100+ professionals serving clients locally and globally from 52 locations. We are the largest engineering and construction firm solely focused on the U.S. water and environmental sectors. Our creative designs and progressive solutions have helped municipal, federal and private organizations overcome their most complex environmental challenges. We offer...

Loop is one of the top EV charging network in the U.S., delivering smart, reliable charging solutions for multifamily, retail, office, hospitality, and municipal properties. With over 7,800 chargers deployed, we make it easy to future-proof your site and boost revenue with seamless EV infrastructure.

Soligent Distribution, a subsidiary of Soligent Holdings Inc., is the largest solar distributor in the Americas, supplying thousands of solar installers and contractors with solar energy equipment, engineering services and project financing solutions. Soligent has been a pioneer in the solar industry since 1979 and continues to drive the market forward with innovative solutions ranging from materials management to project...

At Arbor, we’re sustainably powering the present while erasing emissions of the past. Our innovative system transforms organic waste into clean, reliable electricity while capturing carbon dioxide at scale. Founded by space tech veterans who pivoted from building technology to explore new planets to protecting our own, Arbor leverages cutting-edge aerospace technology to tackle climate change. Our mission is to...

Founded in 2019, Terabase Energy is a solar technology company whose mission is to reduce the cost and increase the scalability of solar by building an interconnected digital and automation platform for the development, construction, and operations of utility-scale PV power plants.

Deep Isolation offers an innovative solution to secure and dispose of spent nuclear fuel from commercial nuclear reactors. Our horizontal drill hole technology offers both safety and low cost. While the drilling technology is standard, Deep Isolation is the first company proposing to use this method for the safe isolation of spent nuclear fuel under a billion tons of rock...

Partnering across the energy landscape to make it easy for customers to save energy and money at home, transforming how we power the world

SOLV Energy is a renewable energy solutions provider for utility solar, energy storage, and high voltage projects in North America. Our passionate teams work seamlessly to drive innovation and deliver performance from build to operations, with safety at the forefront of everything we do. We are here for the long haul, developing lasting relationships with our customers, investing in our...

Focused on sustainability and innovation, esVolta develops, owns, and operates reliable utility-scale energy storage assets across the entire lifecycle - delivering value for utilities, energy users, and investors.

Frontier Energy is a professional services firm that excels in market transformation. With a team of 170 talented people in eight offices across the U.S., Frontier Energy has decades of experience in program management, engineering, software, and customer engagement. We are committed to a single mission: To provide exceptional programs, services, and tools that encourage the intelligent use of energy. We...

Toyota Research Institute (TRI) envisions a future where Toyota products, enabled by TRI technology, dramatically improve quality of life for individuals and society. To achieve its Vision, TRI’s Mission is to create new tools and capabilities focused on improving the human condition through research in Energy & Materials, Human-centered AI, Human Interactive Driving, and Robotics. We’re on a mission to improve...

Swift Solar is a U.S. company developing advanced solar technology that outperforms anything on the market today. Swift Solar is a spinout of Stanford, MIT, and the National Renewable Energy Laboratory. The team includes world-leading technologists with deep expertise in perovskite PV science, technology, and manufacturing. Swift Solar's technologies range from specialized solar cell architectures to advanced manufacturing techniques.

We develop, own, and operate energy infrastructure to contribute to the stable and sustainable energy supply in the US and globally. Moreover, by boosting renewable and future energy development and innovation, we aim to be a responsible and reliable energy player in the upcoming low-carbon society.